Calf weaning board



FIG. 1 is a front and rear elevation view of a calf weaning board showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is perspective view thereof. 

The ornamental design for a "calf weaning board", as shown. 